# Relationship history for MSHA mine 4300605

Current hierarchy: **R Daniel  Heath; Marie M  Heath; Andrew D  Heath → Raymond Heath Construction, Inc. → Elcon Pit**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Raymond Heath Construction, Inc. → Elcon Pit; 2004-05-19 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Marie M  Heath et al → Elcon Pit; 2004-05-19 to 2022-10-10; source msha-controller-operator-history
- **controller_controls_operator:** Marie M  Heath et al → Raymond Heath Construction, Inc.; 2004-05-19 to 2022-10-10; source msha-controller-operator-history
- **controller_controls_operator:** Raymond J  Heath et al → Raymond Heath Construction, Inc.; 2004-05-19 to 2022-10-10; source msha-controller-operator-history
- **controller_controls_mine:** Andrew D  Heath → Elcon Pit; 2022-10-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Andrew D  Heath → Raymond Heath Construction, Inc.; 2022-10-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** R Daniel  Heath et al → Raymond Heath Construction, Inc.; 2022-10-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Marie M  Heath et al → Raymond Heath Construction, Inc.; 2022-10-11 to current/open; source msha-controller-operator-history